Results 61 to 70 of about 1,405,729 (293)

ANALISA PENYEBAB LOST CIRCULATION PADA TRAJECTORY 17 ½ INCH SUMUR “IKHTIAR-3” LAPANGAN “TAWAKAL” [PDF]

, 2013
Masalah yang banyak dijumpai dalam operasi pemboran antara lain salah satunya adalah lost circulation atau hilang lumpur, maksudnya adalah hilangnya sebagian atau seluruh fluida pemboran dalam hal ini lumpur kedalam formasi ketika disirkulasi, yang ...
PANJI IKHLASUL , AMAL
core  

microRNA‐7‐5p and α‐Synuclein SAA Predict Parkinson's Disease Phenoconversion

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Corroborate blood neuron‐derived extracellular vesicle (NDEV) alpha‐synuclein (αSyn), the CSF αSyn seed amplification assay (αSyn‐SAA), and blood microRNA‐7‐5p (miR‐7‐5p) as markers for Parkinson's disease (PD) phenoconversion and determine if combining these markers would help select subjects who would be more likely to phenoconvert.
Shayan Zadegan, Praveen Velammal, Kanmani Muthiah, Madhu Jatty, Christopher Adams   +4 more
wiley   +1 more source

β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations

Advanced Biology, Volume 9, Issue 3, March 2025.
Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio, B. Spedicato, G. Corallo, A. Inguscio, M. Greco, D. Musarò, D. Vergara, A. F. Muro, G. De Sabbata, L. R. Soria, N. Brunetti Pierri, M. Maffia   +11 more
wiley   +1 more source

Experimental Study on Lost Circulation Control with Particle-Gel Composite Plugging on a Novel Dynamic Circulating Lost Circulation Device

Zuanjingye yu wanjingye
Experimental devices currently in use for lost circulation control test have such shortages in simulating dynamic circulation and evaluating the performance of lost circulation slurries.
Zhaowen HU, Yiqun ZHANG, Yanjun LIU, Xinyu WANG, lili YANG, Ya LIU   +5 more
doaj   +1 more source

Status of lost circulation research

, 1993
This paper describes progress made in the Lost Circulation Technology Development Program over the period March, 1992--April, 1993. The program is sponsored at Sandia National Laboratories by the US Department of Energy, Geothermal division.
Wright, E. K., Bates, C. W., Schafer, D. M., Whitlow, G. L., Glowka, D. A.   +4 more
core  

DOE lost circulation technology development [PDF]

, 1996
Lost circulation is a problem common in both the geothermal and the solution mining industries. In both cases, drilling is on a relatively large scale (geothermal holes can be as large as 26 inches). Lost circulation technology development for geothermal
Staller, G.E., Glowka, D.A., Sattler, A.R.   +2 more
core  

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

Dominant Lost Circulation Channels of Drilling Fluid in Fractured Formations: A Numerical Simulation Study

Geofluids
Lost circulation is a prominent issue when drilling in fractured formations, posing challenges for management and presenting a high risk of recurrence.
Yayun Zhang, Junhai Chen, Jinfa Zhang, Yi Wang, Kehao Bo, Shuai Zhang, Yongcun Feng   +6 more
doaj   +1 more source

Biodegradable 3D‐Printable and Coatable Antifouling Composites for Marine Applications

Advanced Functional Materials, EarlyView.
Marine biofouling damages submerged surfaces and raises greenhouse gas emissions. Biodegradable antifouling biocomposites were developed by hot‐mixing beeswax, Tween 80, and calcium stearate or stearic acid. Adjusting the component ratio enables processing via hot‐pressing, 3D‐printing, or dip‐coating.
Gabriele Corigliano, Lorenzo Ravelli, Martina Nardi, Ruowen Tu, Elena Bellini, Valerio Isa, Carlo Filippeschi, Roberta Finazzi, Luca Ceseracciu, Niloofar Paknezhad, Vincenzo Scribano, Paolo Galli, Silvia Lavorano, Simone Montano, Barbara Mazzolai, Marco Contardi, Pietro Cataldi, Athanassia Athanassiou   +17 more
wiley   +1 more source

New Developments in the Control of Lost Circulation [PDF]

Fall Meeting of the Petroleum Branch of AIME, 1955
Abstract Laboratory and field tests were conducted for the purpose of improving techniques for the control of loss of circulation of drilling fluids and to determine some effects of lost circulation materials on drilling fluids and drilling rates.
P.P. Scott, J.L. Lummus
openaire   +1 more source